As mentioned in another post, H5P is a free and open source authoring tool for rich and interactive learning content in HTML5. It’s designed to work on mobile devices as well as on desktop.
You can either add the H5P plugin to your WordPress or Drupal site, or you can create learning content on h5p.org and then embed it your site, just like a YouTube video.
Disclaimer: I’m a part of the team contributing to H5P.
Though i am not so technical, but i have seen my tech team uses one of them hope this will helpful to you, No ranking but these all are good to try.
Don’t think that Adapt Learning Project Community is a match for you.
I found some useful links maybe you can find some more on this.
Free and Open Source Authoring Tools for e-Learning – eFront Blog,
The Ultimate List of HTML5 eLearning Authoring Tools – eLearning Industry
You can discuss such topics on worldwide Community for the e-learning enthusiasts .